'King of the Jews' in the Bible

Then Pilate entred into the Pretorium, and addressing himself to Jesus, said to him, are not you the king of the Jews?

but as it is customary with you to get me to discharge some prisoner at the time of the passover, would you have me release the king of the Jews?

hail king of the Jews! said they, and struck him on the cheeks.

and Pilate caused an inscription to be put over the cross, in these words, JESUS OF NAZARETH THE KING OF THE JEWS.

thereupon the chief priests of the Jews went to Pilate, saying, don't write, "The king of the Jews;" but that he said, I am king of the Jews.